IS

IS may refer to:

Literature

 * Book of Isaiah, a biblical text
 * Is (novel), a novel by Joan Aiken
 * i"s, a manga by Masakazu Katsura
 * iS (manga), a manga by Chiyo Rokuhana
 * Infinite Stratos, a Japanese light novel series

Other media

 * is (album), a 1969 album by jazz pianist Chick Corea
 * is, a 2012 album by Canadian pop band Hey Ocean!
 * iS – internal section, a video game developed by Square

Businesses and organisations

 * Intermediate school, education between primary and secondary schools areas, also known as middle school
 * Ilta-Sanomat, a newspaper in Finland
 * Intelligent Systems, a first-party video game developer and internal team of Nintendo
 * International Socialists (disambiguation), several Trotskyist political organizations
 * Investment—Saving, a curve in the IS/LM model of economics
 * Island Airlines (IATA code)

Language

 * Is, the third-person singular present tense of the English language verb "to be", frequently used as a copula
 * Icelandic language (ISO 639-1 alpha-2 code)
 * International Sign, a pidgin sign language


 * Is (rune) (ᛁ), a rune of the Anglo-Saxon fuþorc

Places

 * Island (Is.), any piece of land surrounded by water
 * Iceland (ISO 3166-1 alpha-2 country code)
 * Israel (NATO country code)
 * Hīt, or Is, an Iraqi town on the Euphrates River
 * Ys or Is, a mythical city of Brittany
 * Iași County, Romania, (vehicle registration code)
 * Inverness TMD, a railway traction maintenance depot (depot code)
 * Province of Isernia, Italy (vehicle registration code)

Science and mathematics

 * Immune system, organic mechanisms that protect against disease
 * Immunosuppression
 * Importance sampling, a statistical technique for estimating properties of a particular distribution
 * Infrasound, sound frequencies below the human range of hearing
 * Insertion sequence, a short DNA transposable element
 * Intersex, an organism with sex characteristics neither exclusively male nor female

Computing

 * .is, the Internet country-code top-level domain for Iceland
 * Information science, the study of data collection, manipulation, and dissemination
 * Information systems, organizations of data-processing persons, records, and activities
 * InstallShield, a software tool for creating software installers for Microsoft Windows
 * IntelliStar, a computer system used to display local forecasts on The Weather Channel
 * the relational operator, used in Python
 * the type comparison operator, used in C#

Vehicles and weaponry

 * IS tank, a Soviet heavy tank in World War II.
 * Istrebitel Sputnikov or "Destroyer of Satellites", a Soviet anti-satellite weapons program.
 * Lexus IS, a sports car made by Lexus.
 * Locomotive IS, a Soviet passenger steam locomotive.
 * Nikitin-Shevchenko IS, a Soviet fighter aircraft.

Other uses in technology

 * Image stabilization, a family of techniques to reduce blur caused by lens shakes
 * Canon Image Stabilizer, a lens-based image stabilization technology by Canon
 * Intrinsic safety, a protection technique for electronic equipment in explosive atmospheres
 * Indian Standard, developed by the Bureau of Indian Standards, for example IS 456
 * International Standard, a mounting standard for the calipers and rotors of disc-type bicycle brake systems

Other uses

 * Internal security, the work of keeping domestic peace by a national force
 * International studies, or International relations, the study of politics, economics and law on a global level
 * Is, in is-ought philosophy, a fact or empirical state with finite limits in space and time
 * Old Israeli Shekel, commonly denominated as IS
 * Islamic State, an Islamic terrorist organization